Grandidierite
Grandidierite
Grandidierite

Grandidierite

€640,00

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SKU: B056
Behara, Amboasary South District, Anosy, Madagascar
Many small, leaf-like grandidierite crystals protrude into a cavity or form a beautiful rosette.
10.9 x 6.1 x 4.4 cm
268.0 g

Grandidierite is a rare orthohombic nesosilicate that consists of both SiO4 and BO3 elements ("borosilicate"). The greenish-blue mineral is relatively hard (Mohs=7.5), mostly opaque, more rarely translucent or transparent. A higher iron content causes grandidierite to have a greener color. Crystals with terminal faces are rarely found.